Hey Andrea,
sorry for not clearing out things before. This is what i suggest:
Making a Vector tool box for udig which can support the following
functionality:
1.Exporting Geometry of a shapefile or adding to its attributes*:* The
Geometry for each entity(line/point/polygon) in the shapefile can be
exported or added to the attribute table corresponding to that entity.
2. Tool for creating Delaunay triangles from a points data shapefile.
3. Tool for creating Voronoi Polygons from a point data shapefile.
4. Tool to simplify the geometries of polygons and polylines.
5. Exporting the nodes from polygons and lines, or lines from polygons
6. Analysis tools like:
a. Distance Table matrix for points: It will create a matrix showing
distance between every pair of points the in shapefile.
b.Points in a polygon: It will tell which points lie within a polygon
and which doesn't.
c.Others like: Listing unique values in a specified attribute, giving
basic statistics, regarding the data like Mean value, standard deviasion,
min, max values etc.
7. Operations like finding the convex hull of a set of points can be added
to the Axios tool extension as well.
For implementing such tools, there are two ways, one is to develop the
standard algorithms from scratch for operations like Delaunay triangles,
Voronoi Polygons, or the other way is to use the support library that udig
uses 'JTS', which supports some of the operations mentioned above, and then
link it to the visualization. And other operations are quite straight
forward to implement.
As far now, i haven't done any uDig development, but i can learn fast. I
am comfortable in using java, and have used the eclipse sdk before.
Operations that i found that udig supports:
1. Polygons Centroid.
2. Converting lines or points to polygon.
3. Spatial Operations like union, intersection, etc. (implemented in Axios
tools)
Thanks,
On 10 April 2013 19:54, andrea antonello <andrea.antone...@gmail.com> wrote:
> Hi Vishal,
>
> > I was thinking if implementing some kind of Vector tools for udig,like
> > geometry,analysis,research tools(similar to ftools in QGIS) can be a
> > possible Gsoc project.
>
> well that is not exactly what I was implying when asking you to
> present your idea.
> We had students coming in with great ideas that were very blurry and
> then were not finished at all.
>
> So if you want to gain interest for potential mentors in this
> community, you should elaborate and show that you really thought about
> it.
>
> What is it you want to create?
> Which tools?
> Do you have skills to understand how to build the tools outside of uDig?
> Do you know any of uDig development?
> Do you know if there are already some tools that do the same? Or maybe
> the Axios tools that need to be ported might be some code already done
> for that and would just need to be migrated?
>
> From what you write in your email I do not understand what you want to
> do and what skills you have to do so.
>
> Cheers,
> Andrea
>
>
>
>
>
>
> >
> > Thanks,
> > Vishal Tiwari
> > Undergraduate
> > Computer Science and Engineering
> > Lab for Spatial Informatics
> > IIIT-Hyderabad
> >
> > _______________________________________________
> > User-friendly Desktop Internet GIS (uDig)
> > http://udig.refractions.net
> > http://lists.refractions.net/mailman/listinfo/udig-devel
> >
> _______________________________________________
> User-friendly Desktop Internet GIS (uDig)
> http://udig.refractions.net
> http://lists.refractions.net/mailman/listinfo/udig-devel
>
--
Vishal Tiwari
Undergraduate
Computer Science and Engineering
Lab for Spatial Informatics
IIIT-Hyderabad
_______________________________________________
User-friendly Desktop Internet GIS (uDig)
http://udig.refractions.net
http://lists.refractions.net/mailman/listinfo/udig-devel
